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Traffic signal lamp real-time control method and system based on combined control strategy

A real-time control system, a technology for traffic lights, applied in the direction of controlling traffic signals, traffic control systems for road vehicles, traffic control systems, etc. The effect of controlling, improving traffic efficiency and alleviating urban traffic congestion

Inactive Publication Date: 2021-02-02
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can handle emergencies, improve the efficiency of intersection traffic, enable the intersection signal to achieve refined and intelligent control, and then effectively control the traffic flow, ensure the safe passage of vehicles and reduce the waiting time of vehicles at the intersection, and solve the problem of intersection traffic jams. Problems such as frequent congestion, poor accuracy and flexibility of signal light control methods have extremely important practical significance for alleviating urban traffic congestion.

Method used

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  • Traffic signal lamp real-time control method and system based on combined control strategy
  • Traffic signal lamp real-time control method and system based on combined control strategy
  • Traffic signal lamp real-time control method and system based on combined control strategy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 As shown, a real-time traffic signal control method based on a combined control strategy, according to the measured traffic flow, takes the green light duration and signal state as controllable variables, specifically including:

[0039] S1: Determine the target traffic flow direction and the corresponding green light duration. The target traffic flow direction is two traffic flow directions controlled by green signal lights in the road section; the target traffic flow direction includes the first traffic flow direction and the second traffic flow direction (the green light duration of the first direction and the second direction is the same); the road section includes eight traffic flow directions, Go straight east, go straight south, go straight north, go straight west, turn east left, turn west left, turn north left, and turn south left.

[0040] S2: Judging whether the current duration of the green light is greater than the minimum set green light dur...

Embodiment 2

[0070] like figure 2 As shown, a real-time control method of traffic lights based on a combined control strategy, the control method includes the following steps:

[0071] Step 101, real-time collection of the traffic volume q' in each direction of the entrance road of the intersection in the research area and the configuration information of the traffic lights (including the installation position, orientation, signal timing cycle, etc. of the lights), such as image 3 As shown, draw a schematic diagram of the structure of the selected intersection, and combine the signal lights of each direction in pairs into a phase S in a certain order. a,b , a is one of the directions of the phase, b is the other direction of the phase except a, define S a,b =1 means that the signal light is switched to the phase of green light in direction a and b.

[0072] Step 102: Encode all phase states S combined above, 0 means red light, 1 means green light, and list one by one the codes of a cer...

Embodiment 3

[0162] like Figure 7 As shown, a real-time traffic signal control system based on a combined control strategy, according to the measured traffic flow, takes the green light duration and signal state as controllable variables, including:

[0163] The first determination module A1 is used to determine the target traffic direction and the corresponding green light duration; the target traffic direction is the two traffic directions controlled by the green signal lights in the road section; the target traffic direction includes the first traffic direction and the second traffic direction; the road section includes The eight traffic flow directions are going straight east, going straight south, going straight north, going straight west, turning east left, turning west left, turning north left and turning south left.

[0164] The first duration judging module A2 is used to judge whether the current green light duration is greater than the minimum set green light duration, and obtai...

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Abstract

The invention relates to a traffic signal lamp real-time control method and system based on a combined control strategy. The traffic signal lamp control method comprises the steps of determining a target traffic flow direction and a corresponding green light duration according to an actually measured traffic flow by taking a green light duration and a signal state as controllable variables, determining road saturation of each traffic flow direction, determining a traffic flow of each traffic flow direction, determining a red light waiting duration of each traffic flow direction, and changing the direction of the target traffic flow according to the conditions. According to the traffic signal lamp real-time control method and system based on the combined control strategy, the adaptive signal control strategy is selected under different traffic conditions, and the traffic signal lamp real-time control method and system automatically adapt to the flow condition. According to the method, emergency situations can be handled in time, the intersection traffic efficiency is improved, refined and intelligent control over intersection signals is achieved, and the problems that the intersection congestion phenomenon occurs frequently, and a signal lamp control method is poor in accuracy and flexibility are solved.

Description

technical field [0001] The invention relates to the technical field of traffic signal lamp control, in particular to a real-time open-loop control method and system for traffic signal lamps based on measured traffic flow and a combined control strategy. Background technique [0002] With the rapid development of the city, the number of vehicles is increasing day by day. There is a serious imbalance between the large traffic demand and the limited traffic supply, which leads to traffic congestion. Traffic congestion not only restricts the city's operation speed and economic development, but also brings environmental pollution. and noise pollution. Controlling traffic congestion is the basis for the further healthy development of the city, and it is also an urgent need related to the vital interests of the public. Strengthening traffic management and control at intersections is one of the key parts to reduce traffic congestion. [0003] For the intersection, a key traffic nod...

Claims

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Application Information

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IPC IPC(8): G08G1/095G08G1/08G08G1/085
CPCG08G1/08G08G1/085G08G1/095
Inventor 王成王新艺曹堉丁成高悦尔王靖张惠臻应晖
Owner HUAQIAO UNIVERSITY
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